Backpack lunch box



FIG. 1 is a top right front perspective view of a backpack lunch box showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof; the opposite side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top right front perspective view of an alternate embodiment of FIG. 1; and,

FIG. 8 is a front elevational view of FIG. 7.

The undisclosed rear, bottom and left side views of the alternate embodiment are the same as the first embodiment. 

The ornamental design for a backpack lunch box, as shown and described. 